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Title: Tuning the GENIE Pion Production Model with MINERvA Data

Abstract

Faced with unresolved tensions between neutrino interaction measurements at few-GeV neutrino energies, current experiments are forced to accept large systematic uncertainties to cover discrepancies between their data and model predictions. In this paper, the widely used pion production model in GENIE is compared to four MINERvA charged current pion production measurements using NUISANCE. Tunings, ie, adjustments of model parameters, to help match GENIE to MINERvA and older bubble chamber data are presented here. We find that scattering off nuclear targets as measured in MINERvA is not in good agreement with scattering off nucleon (hydrogen or deuterium) targets in the bubble chamber data. An additional ad hoc correction for the low-$Q^2$ region, where collective effects are expected to be large, is also presented. While these tunings and corrections improve the agreement of GENIE with the data, the modeling is still far from perfect. The development of these tunings within the NUISANCE framework means that they can easily be extended to other neutrino event generator models in the future, and compared with, or adapted to include, new datasets very easily.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
MINERvA
OSTI Identifier:
1542968
Report Number(s):
arXiv:1903.01558; FERMILAB-PUB-19-093-ND
1723695
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
TBD
Additional Journal Information:
Journal Name: TBD
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Stowell, P., and et al. Tuning the GENIE Pion Production Model with MINERvA Data. United States: N. p., 2019. Web.
Stowell, P., & et al. Tuning the GENIE Pion Production Model with MINERvA Data. United States.
Stowell, P., and et al. Mon . "Tuning the GENIE Pion Production Model with MINERvA Data". United States. https://www.osti.gov/servlets/purl/1542968.
@article{osti_1542968,
title = {Tuning the GENIE Pion Production Model with MINERvA Data},
author = {Stowell, P. and et al.},
abstractNote = {Faced with unresolved tensions between neutrino interaction measurements at few-GeV neutrino energies, current experiments are forced to accept large systematic uncertainties to cover discrepancies between their data and model predictions. In this paper, the widely used pion production model in GENIE is compared to four MINERvA charged current pion production measurements using NUISANCE. Tunings, ie, adjustments of model parameters, to help match GENIE to MINERvA and older bubble chamber data are presented here. We find that scattering off nuclear targets as measured in MINERvA is not in good agreement with scattering off nucleon (hydrogen or deuterium) targets in the bubble chamber data. An additional ad hoc correction for the low-$Q^2$ region, where collective effects are expected to be large, is also presented. While these tunings and corrections improve the agreement of GENIE with the data, the modeling is still far from perfect. The development of these tunings within the NUISANCE framework means that they can easily be extended to other neutrino event generator models in the future, and compared with, or adapted to include, new datasets very easily.},
doi = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:

Figures / Tables:

Table I Table I: Summary of the measurements used in this analysis. Wrec is the reconstructed hadronic mass. None of the measurements veto on activity other than the µ and π in their event selection, and all selections require 1.5 < Eν < 20 GeV.

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